Professional Japanese Localization Services

Native Japanese localization services for apps, websites, SaaS, AI products, games, and e-commerce. We help global businesses deliver natural Japanese that builds trust, improves SEO, and increases conversions.

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Why Global Brands Choose Japa-Fit

Native Japanese translators

Our rigorous quality control is backed by a three-step review process featuring bilingual, native English, and native Japanese experts.

Fast & Frictionless Delivery

Receive your localized content in as little as 24–48 hours for most standard projects.


SEO & Conversion Focused

We don’t just translate word-for-word. We optimize your headings and copy using actual search keywords used by Japanese consumers.

Trusted Worldwide

Supporting startups, SaaS companies, game studios,
and global businesses entering the Japanese market.

Cultural Adaptation

We adapt your content to Japanese culture, tone, and audience expectations.

Confidential & NDA

Your files are handled securely. NDA agreements are available upon request.

Native Japanese Localization Services
Professional Japanese Translation
Website, App, Game & SaaS Localization
Japanese Proofreading & AI Translation Review
SEO-Optimized Japanese Content
Fast Turnaround & Transparent Pricing

Trusted by startups, software companies, game studios, and global businesses expanding into Japan.

Work Flow

① Send us your files

Please share the text via URL or file upload. Transcription services are also available for an additional fee.

② Receive a free quote

Access our simple, 24-hour quote request form here.

③ Complete payment

We accept credit cards, PayPal, and bank transfers.

④ Check the delivered files

We deliver the content in text format or the file format specified at the time of your request.

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Why Choose JapaFit

We help global developers, startups, creators and software companies create natural Japanese that users actually trust.

From translation to localization, proofreading and linguistic quality assurance, every project is reviewed by native Japanese professionals. Because Japanese users notice every unnatural word.

$0.20~

Japanese Translation
Per single-word

$0.05~

Japanese Proofreading
Per Japanese character

Make your business sound native, trusted, and localized for growth.

AI tools like DeepL and ChatGPT are great, but they don’t understand the nuances of the Japanese market. We manually polish, review, and localize your website, apps, and marketing copy to look like a premium Japanese brand.

More Than Translation

At JapaFit, we don’t just translate words—we localize your content for the Japanese market. Every project is reviewed by native Japanese professionals to ensure your message sounds natural, culturally appropriate, and trustworthy.

Simple & Transparent Pricing

We charge strictly based on the volume of your content.

English to Japanese

$0.20

/ English Word

Professional translation for websites, software, apps, documentation, marketing materials, and business content.

  • Native Japanese translation
  • Manual quality review
  • Consistent terminology
  • Natural, fluent Japanese
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Proofreading & Cultural Audit

$0.05

/ Japanese Character

Already translated using ChatGPT, DeepL, Google Translate, or another translator?

We refine your Japanese into natural, professional, native-quality writing.

  • Native Japanese translation
  • Grammar correction
  • Style consistency
  • Typographical correction
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Minimum Charge

$25

/ Order

Small projects are always welcome.

  • Japanese Localization
  • Business-level Japanese
  • Fast Delivery

Ready to Localize Your Product for Japan?

We specialize in refining AI-translated Japanese into natural, fluent, and professional content.

  • Transparent Pricing
  • Fast Delivery
Get Your Free Quote

Translation Example

Example 1｜SaaS Landing Page

  • Original English
    Get started in minutes and grow your business faster with our platform.
  • AI Translation
    数分以内に始めて、私たちのプラットフォームであなたのビジネスをより速く成長させてください。
  • JapaFit
    数分で利用を開始し、ビジネスの成長をサポートします。日々の業務を効率化し、よりスムーズな運営を実現できます。

Example 2｜EC Product Description

  • Original English
    Made from premium materials, this bag is perfect for everyday use.
  • AI Translation
    このバッグはプレミアム素材から作られており、毎日の使用に完璧です。
  • JapaFit
    上質な素材を使用したバッグです。通勤やお出かけなど、毎日のさまざまなシーンで快適にお使いいただけます。

Example 3｜App UI

  • Original English
    Your profile has been updated successfully.
  • AI Translation
    あなたのプロフィールは成功的に更新されました。
  • JapaFit
    プロフィールを更新しました。

Example 4｜Business Email

  • Original English
    Thank you for your reply. If you have any questions, please let us know.
  • AI Translation
    あなたの返信に感謝します。もし質問があれば、私たちに知らせてください。
  • JapaFit
    ご返信ありがとうございます。ご不明な点がございましたら、お気軽にお問い合わせください。

Frequently Asked Questions

General

Absolutely. AI-assisted translation review is one of our core services. We refine AI-generated Japanese into natural, fluent, and culturally appropriate language while correcting grammar, terminology, and style.

We work with a wide range of file formats, including Microsoft Word, Excel, PowerPoint, Google Docs, Google Sheets, CSV, JSON, XML, XLIFF, and plain text files. If you have a different format, feel free to contact us.

Every project is carefully reviewed by a native Japanese translator. We check for accuracy, consistency, natural wording, grammar, and cultural appropriateness to ensure your content reads as if it were originally written in Japanese.

Work starts after full payment has been confirmed.

Yes. We are happy to sign a Non-Disclosure Agreement (NDA) before starting your project. All client files and information are treated as strictly confidential.

Yes.
We specialize in website localization for Japanese users.

Yes. We localize Shopify stores, including product pages, collections, navigation menus, checkout-related content, blogs, and marketing materials. Our goal is to create natural Japanese that improves user experience and helps increase conversions in the Japanese market.

Yes. If you provide the source text in a document or spreadsheet, we can localize your mobile app into natural Japanese. For pre-launch projects, screenshots or design mockups are highly recommended to ensure accurate context, consistent terminology, and a better user experience.

Yes. Rush orders are available depending on our current workload and project size. Please contact us before placing your order to confirm availability and any applicable rush fees.

We primarily use OmegaT, an open-source CAT tool that allows us to maintain translation consistency and terminology across projects. All translation work is performed locally to help protect confidential information and ensure secure handling of your files.

Prices & Payments

Prices vary based on the length, difficulty, and format of your texts. To give an idea, our average price to date has been around 0.2 USD per source word (around 25 USD per standard page). For more information you can consult our page on Plan & Pricing.

You can send us the files via the contact form or via email, and our Account Manager will get back to you within a couple of hours with a quote.

We operate on a pre-payment basis. After you submit your request through our form, our team will calculate the cost and email you a Stripe invoice.

Please complete your payment within 3 days of receiving the invoice. We will begin the translation process and deliver the final work once your payment has been successfully confirmed.

Due to the nature of digital and manual services, we do not offer refunds once work has begun. However, we provide revision rounds to ensure you are 100% satisfied with the quality.

We accept credit card payments and bank transfers.

Yes. Our minimum order is USD 25 per project. Small projects are always welcome.

The prices displayed on our quotes and website are net prices and do not include any local taxes (such as VAT or GST).
As our services are provided from Japan, any tax compliance, reverse charge obligations, or local tax declarations required in your country are the sole responsibility of the client. Please consult your local tax regulations if you have any questions.

Ready to Reach Japanese Customers?

Get a free quote within 24 hours and start your Japanese localization project with confidence.